On 30 December 2008, a group of researchers announced on the 25th Chaos Conversation Congress how they'd used MD5 collisions to make an intermediate certificate authority certificate that appeared to be reputable when checked by its MD5 hash.[24] The researchers used a PS3 cluster at the EPFL in Lausanne, Switzerland[38] https://sunwin16926.total-blog.com/a-secret-weapon-for-what-is-md5-technology-58776001